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Arc Browser to Shut Down Dec. 22 as Browser Company Focuses on Dia

The Browser Company will shut down Arc on Dec. 22, 2026, moving users to AI-first Dia and citing security costs.

AI News Feed · 2026-10-23 06:41

The wind-down is staged. As of Thursday, new Arc accounts can no longer be created. On Nov. 23, Arc Search on iOS and Android will lose its AI features, including “Browse for Me.” Users will no longer be able to sign in or sync tabs, though the app will continue functioning as a basic local browser. On Dec. 22, Arc will stop working entirely on Mac and Windows. Accounts will be deactivated, and personal data will be deleted within 30 days. Arc Search will also be removed from the Google Play Store.

“Keeping a browser secure takes constant, dedicated work that is only increasing in the age of AI,” the company wrote, according to TechCrunch. “Dia was built from the ground up to meet today’s security standards, so that’s where our engineering and security teams will focus moving forward.”

For users making the switch, Dia will carry over equivalents of several core Arc features. Users can still swipe between different work and personal environments using Dia’s “Profiles,” formerly Arc’s Spaces. Arc’s vertical tabs will remain as an optional sidebar layout, while Folders have been rebranded as “Pinned Tab Groups.” Passwords, bookmarks, extensions, and history will transfer to Dia. Arc features will remain free in Dia, with AI optional.

TechCrunch reported that user reactions on social media were largely disappointed, with many reviving requests for The Browser Company to make Arc open-source. CEO Josh Miller previously said Arc is built on the Arc Development Kit, a proprietary internal SDK that is also the core engine powering Dia. Open-sourcing Arc would mean giving away Dia’s intellectual property, he said.

“While we’d love to open-source Arc someday, we can’t do that meaningfully without also open-sourcing ADK,” Miller previously noted, according to TechCrunch. “And ADK is still core to our company’s value.”

The shutdown closes a chapter that began in 2025, when the startup stopped active feature development on Arc. The Browser Company was acquired by Atlassian for $610 million in 2025. It conceded at the time that while early adopters loved the browser’s novel interface, the “novelty tax” and complexity limited mainstream adoption. Arc was fiercely beloved by a dedicated group of enthusiasts, but it never quite became the mass-market Chrome alternative its makers once envisioned.